Download some songs from the albums or the whole things and then go buy what you like...I think Gorilla meant that. Or listen to the cd's in your stores listening booth,in case you have one.
Never heard of the band so can't really give you any opinions or anything.
Yeah, hell, I never could understand why Thy Serpent wasn't so popular band like f.ex. Children Of Bodom...
But, yeah, Alexi and Children could be a kind of quite efficient commercial for TS...